Gwen Stefani wore a bikini top yesterday to hit the beach in Mexico with her family. Her husband Gavin Rossdale was shirtless for the sandy adventure, and the duo had the help of a nanny keeping an eye on their young sons Kingston Rossdale and Zuma Rossdale. Gwen jetted South of the Border to meet up with Gavin, who's been on tour with Bush. Their show schedule had Gavin all over the globe in recent weeks. After a quick stint in LA shooting a small role for Sofia Coppola's The Bling Ring, he went to London for a few days. Gavin's happy to have the break with his loved ones. On Sunday, he took to Twitter to write, "Mexico rules — finally decompressing — what an odyssey just getting here." The Stefani-Rossdales may be able to spend a week in Cabo. His next concert isn't until a week from today in Moline, IL.